package com.sky.service.impl;

/**
 * @Author：chén jiā jùn
 * @Create：2023年11月19日23:42
 */

import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.OrdersSubmitDTO;
import com.sky.entity.AddressBook;
import com.sky.entity.OrderDetail;
import com.sky.entity.Orders;
import com.sky.entity.ShoppingCart;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.AddressBookMapper;
import com.sky.mapper.OrderDetailMapper;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.OrderService;
import com.sky.vo.OrderSubmitVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;

/**
 * 订单
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
	@Autowired
	private OrderMapper orderMapper;
	@Autowired
	private  OrderDetailMapper orderDetailMapper;
	@Autowired
	private ShoppingCartMapper shoppingCartMapper;
	@Autowired
	private AddressBookMapper addressBookMapper;


	/**
	 * 用户下单
	 *
	 * @param ordersSubmitDTO
	 * @return
	 */
	@Transactional
	public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
		//异常情况的处理（收货地址为空、超出配送范围、购物车为空）
		AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
		if (addressBook == null) {
			throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
		}

		Long userId = BaseContext.getCurrentId();
		ShoppingCart shoppingCart = new ShoppingCart();
		shoppingCart.setUserId(userId);

		//查询当前用户的购物车数据
		List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
		if (shoppingCartList == null || shoppingCartList.size() == 0) {
			throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
		}

		//构造订单数据
		Orders order = new Orders();
		BeanUtils.copyProperties(ordersSubmitDTO,order);
		order.setPhone(addressBook.getPhone());
		order.setAddress(addressBook.getDetail());
		order.setConsignee(addressBook.getConsignee());
		order.setNumber(String.valueOf(System.currentTimeMillis()));
		order.setUserId(userId);
		order.setStatus(Orders.PENDING_PAYMENT);
		order.setPayStatus(Orders.UN_PAID);
		order.setOrderTime(LocalDateTime.now());

		//向订单表插入1条数据
		orderMapper.insert(order);

		//订单明细数据
		List<OrderDetail> orderDetailList = new ArrayList<>();
		for (ShoppingCart cart : shoppingCartList) {
			OrderDetail orderDetail = new OrderDetail();
			BeanUtils.copyProperties(cart, orderDetail);
			orderDetail.setOrderId(order.getId());
			orderDetailList.add(orderDetail);
		}

		//向明细表插入n条数据
		orderDetailMapper.insertBatch(orderDetailList);

		//清理购物车中的数据
		shoppingCartMapper.deleteByUserId(userId);

		//封装返回结果
		OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
				.id(order.getId())
				.orderNumber(order.getNumber())
				.orderAmount(order.getAmount())
				.orderTime(order.getOrderTime())
				.build();

		return orderSubmitVO;
	}

}
